Question

10) - U
axax 8 = 32
2. Află termenul necunoscut:
a - (6 x 7) = 48
(8 x 7) - a = 20
a + (8 : 1) = 24
(7 : 7) + a = 21
a - (10: 10) = 99
1 219-a= 948
a-4914 = 1 748
1 219-a= 999
(6 x 6): a = 4
a:(4 : 1) = 7​

Answer 1

Răspuns:

2)

a-(6×7)=48

a-42=48

a=48+42

a=90

(8×7)-a=20

56-a=20

a=56-20

a=36

a+(8:1)=24

a+8=24

a=24-8

a=16

(7:7)+a=21

1+a=21

a=21-1

a=20

a-(10:10)=99

a-1=99

a=99+1

a=100

1219-a=948

a=1219-948

a=271

a-4914=1748

a=1748+4914

a=6662

1219-a=999

a=1219-999

a=220

(6×6):a=4

36:a=4

a=36:4

a=9

a:(4:1)=7

a:4=7

a=7×4

a=28